/Engine/Source/Runtime/AssetRegistry/Public/AssetRegistry/IAssetRegistry.h
Enumerate the all paths that are currently cached below the passed-in base path
void EnumerateSubPaths ( const [FName](API\Runtime\Core\UObject\FName) InBasePath, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool([FName](API\Runtime\Core\UObject\FName))> Callback, bool bInRecurse ) const